Blood Crossword

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Across
  1. 4. Element that binds to oxygen in hemoglobin
  2. 5. Carry blood to the heart
  3. 7. Most prevalent part of the blood
  4. 9. Destroy foreign bacteria
  5. 11. Number of oxygen molecules one hemoglobin can hold
  6. 12. Bottom chambers of the heart
  7. 13. Circuit that takes blood to lungs and back
  8. 15. Prevent blood from flowing backwards
  9. 17. Kill parasitic worms and lessen allergic reactions
  10. 19. Allow blood to exchange gases
  11. 20. Name for white blood cells
  12. 23. Creating blood cells
  13. 24. Name of a blood clot
Down
  1. 1. Shape of erythrocytes
  2. 2. Foreign substance in the body
  3. 3. Circuit that takes blood to tissues and back
  4. 6. Anything in the blood with a defined shape
  5. 8. Top Chambers of the heart
  6. 10. Release histamines, which dilate blood vessels
  7. 14. Name for red blood cells
  8. 16. Bind to antigen
  9. 18. Number of types of leukocytes
  10. 21. Carry blood away from the heart
  11. 22. Have a spherical or kidney-shaped nuclei